CN113931932A - Retainer in robot bearing and optimization method - Google Patents
Retainer in robot bearing and optimization method Download PDFInfo
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- CN113931932A CN113931932A CN202111267834.5A CN202111267834A CN113931932A CN 113931932 A CN113931932 A CN 113931932A CN 202111267834 A CN202111267834 A CN 202111267834A CN 113931932 A CN113931932 A CN 113931932A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000005457 optimization Methods 0.000 title abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 238000005256 carbonitriding Methods 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 15
- 238000007689 inspection Methods 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 11
- 238000005255 carburizing Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 238000010791 quenching Methods 0.000 claims description 7
- 230000000171 quenching effect Effects 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 238000012797 qualification Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 230000002950 deficient Effects 0.000 claims description 3
- 238000007542 hardness measurement Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 14
- 208000032825 Ring chromosome 2 syndrome Diseases 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/28—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step
- C23C8/30—Carbo-nitriding
- C23C8/32—Carbo-nitriding of ferrous surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to the technical field of industrial robots, in particular to a retainer in a robot bearing and an optimization method, which comprises a retainer main body, the surface of the retainer body is provided with a switching mechanism, the interior of the retainer body is provided with movable grooves which are annular, are symmetrical up and down at equal intervals, a first movable block is inserted in a movable groove arranged in the retainer body, a limiting rod is inserted in the movable groove arranged in the retainer body, the first movable block is sleeved on the surface of the limiting rod, the surface of the limiting rod is sleeved with the return spring, certain improvement and promotion are made on the heat conductivity, the friction factor, the wear resistance, the impact toughness and the density and the linear expansion coefficient of the retainer in the bearing structure, the heat treatment process of low-carbon steel plus carbonitriding is adopted, under the relatively low cost, the performance of the robot meets the use requirement, so that the repeated positioning precision and the track positioning precision of the robot are ensured.
Description
Technical Field
The invention relates to the technical field of industrial robots, in particular to a retainer in a robot bearing and an optimization method.
Background
In the prior art, the mechanical rotator is supported by the action of bearings in the rotation of each joint of the robot, so that the friction coefficient in the movement process of the mechanical rotator is reduced, and the rotation precision of the mechanical rotator is ensured. The stability of the bearing is directly guaranteed for the running precision of the robot in the using process, and the basic structure of the bearing is composed of four parts, namely an inner ring, an outer ring, a rolling body (a steel ball or a roller) and a retainer.
When the rolling bearing works, the bearing is heated and abraded due to sliding friction, particularly under the high-temperature running condition, the friction, the abrasion and the heating are aggravated by the action of inertial centrifugal force, and the retainer can be burned or broken seriously, so that the bearing cannot work normally.
Disclosure of Invention
Solves the technical problem
Aiming at the defects in the prior art, the invention provides a retainer in a robot bearing and an optimization method, which solve the problems that the bearing is heated and abraded due to sliding friction when a rolling bearing works, friction, abrasion and heating are aggravated under the action of inertial centrifugal force particularly under the high-temperature running condition, and the retainer is burnt or broken seriously, so that the bearing cannot work normally.
Technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the retainer in the robot bearing comprises a retainer body, a switching mechanism is arranged on the surface of the retainer body, the interior of the retainer body is provided with annular movable grooves which are symmetrically arranged at equal intervals up and down, a first movable block is inserted in the movable groove arranged in the retainer body, a limiting rod is inserted in a movable groove arranged in the retainer body, the first movable block is sleeved on the surface of the limiting rod, the surface of the limiting rod is sleeved with a return spring, two ends of the return spring are respectively connected with the inner wall of the movable groove and the first movable block, the surface of the first movable block is connected with a second movable block through a bearing, the surface of the second movable block is sleeved with a movable blocking piece, the second movable block is connected with the movable blocking piece in a sliding mode, and the surface of the movable blocking piece is fixedly connected with the wiping brush head.
Further, the switching mechanism includes the peripheral hardware ring, the surperficial longitudinal symmetry of holder main part is provided with the peripheral hardware ring, the one side that the peripheral hardware ring is close to each other is that annular equidistance symmetry articulates there is the joggle piece, the surface of peripheral hardware ring is annular equidistance through the screw and inserts and be equipped with the screw rod, the slot has been seted up to the top and bottom symmetry of holder main part in annular equidistance, the slot longitudinal section that the holder main part surface was seted up is isosceles trapezoid shape.
Furthermore, a torsion spring is sleeved on a hinge shaft of the tenon joint block, which is hinged with the peripheral ring, and two ends of the torsion spring are respectively connected with the peripheral ring and the tenon joint block.
Furthermore, the bottom end of the screw is connected with a transmission end head through a bearing, and the surface of the transmission end head is a smooth surface.
Furthermore, the surface of the movable baffle is provided with penetrating grooves at equal intervals, and the penetrating grooves are arranged between the wiping brush heads.
Furthermore, the inside of the holder body is in an annular shape, the PVC elastic air valve is symmetrically glued at equal intervals from top to bottom, the surface of the PVC elastic air valve is glued with a passive contact piece, the surface of the passive contact piece is abutted against the surface of the movable separation blade, and round holes are uniformly formed in one side, close to each other, of the PVC elastic air valve.
Furthermore, round holes formed in the surface of the PVC elastic air valve are inclined and intersected with each other, and the intersection points are located at the same horizontal position and distributed annularly.
In a second aspect, a method for optimizing a retainer in a robot bearing, the method being implemented on a retainer in a robot bearing according to any one of claims 1 to 7, comprising the steps of:
step 1: acquiring the process and performance requirement data of the bearing retainer;
step 2: selecting a casting material suitable for steel according to a process target, and carrying out a carbonitriding quenching process after heat treatment on the steel;
step 3: keeping the internal temperature of the vessel at 850 ℃ during the process, and setting the carburizing and heat preservation time to be 30 min;
step 4: sampling the bearing retainer after the process is finished;
step 5: carrying out heat and stress test and specification detection on the finished retainer product, and waiting, and carrying out quality inspection on the samples one by one;
step 6: the reference toughness and stress test result is the qualified standard of the component, and the toughness defective component does not participate in the specification detection;
step 7: and calculating the total qualification rate of the process components in the same batch according to the sampling target, and setting a echelon qualification rate processing mode feedback index.
Furthermore, a retainer quality inspection queue is arranged in the Step5, and the queue performs sequential quality inspection according to the support time of the finished retainer, wherein the toughness and stress test of the quality inspection item sets the priority.
Further, the effective hardened layer after carburizing and quenching is calculated as follows:
in the formula: HG is a specified hardness value;
d1d2is the effective hardened layer hardness value;
H1H2is d1d2The arithmetic mean of the hardness measurements.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
1. the invention makes certain improvement and promotion aiming at the heat conductivity, friction factor, wear resistance, strong impact toughness, density and linear expansion coefficient of the retainer in the bearing structure, changes the heat treatment process of low-carbon steel plus carbonitriding, and ensures that the performance of the retainer meets the use requirement under the relatively low cost so as to ensure the repeated positioning precision and the track positioning precision of the robot.
2. The invention reduces the special abnormal sound of the bearing of the robot joint and the reject ratio of deformation after heat treatment to a certain extent, and reduces the energy consumption required by heat treatment processing by about one third due to the reduction of the process temperature and the carburizing and heat-preserving time, thereby achieving the purpose of saving the production cost.
3. The invention can reduce the overheating strain of the bearing used in the retainer due to long-time use in the using process by means of dust cleaning, further improves the working performance of the bearing carrying the retainer, and simultaneously adds a group of structures which can be matched with another group of large and small rolling bodies to the retainer in a tenon-and-mortise mode, thereby realizing the installation and use of the bearings with different sizes by the retainer.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic perspective view of a retainer in a robot bearing;
FIG. 2 is a schematic diagram of an independent structure of the switching mechanism of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2A of the present invention;
FIG. 4 is a schematic view of an independent structure of a movable baffle according to the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at B in accordance with the present invention;
FIG. 6 is a schematic diagram of the independent structure of the PVC elastic gas valve of the present invention;
FIG. 7 is a schematic flow chart of a method for optimizing a cage in a robot bearing;
FIG. 8 is a schematic view showing the state of the results of the carburizing and quenching test in the present invention;
FIG. 9 is a schematic view showing the status of carbonitriding test results in accordance with the present invention;
FIG. 10 is a schematic diagram showing the ratio of the carbon content over time to the temperature during the nitrocarburizing process for the cage according to the present invention;
the reference numerals in the drawings denote: 1. a holder body; 2. an outer ring; 3. a joggling block; 4. a screw; 5. a transmission end head; 6. a first movable block; 7. a limiting rod; 8. a return spring; 9. a second movable block; 10. a movable baffle plate; 11. wiping the brush head; 12. a PVC elastic air valve; 13. and a passive contact piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
A holder in a robot bearing of the present embodiment, as shown in figure 1, 4 and 9, including holder main part 1, the surface mounting of holder main part 1 has the switching mechanism, the inside of holder main part 1 is the annular about the equidistance symmetry seted up the activity groove, the activity inslot interpolation that holder main part 1 inside was seted up is equipped with first movable block 6, the activity inslot interpolation that holder main part 1 inside was seted up has gag lever post 7, first movable block 6 cover is established on the surface of gag lever post 7, the surface cover of gag lever post 7 is equipped with reset spring 8, reset spring 8's both ends are connected with activity inslot wall and first movable block 6 respectively, first movable block 6's surface is connected with second movable block 9 through the bearing, the surface cover of second movable block 9 is equipped with movable separation blade 10, second movable block 9 and movable separation blade 10 sliding connection, the brush head 11 is cleaned with fixedly connected with to movable separation blade 10's surface.
In the use process of the embodiment, an inner ring, an outer ring and a rolling body are arranged inside the retainer body 1 to form a bearing with complete functionality, when the bearing runs, the rolling body inside the retainer body 1 rotates and moves inside the retainer body 1, the rolling body is abutted against the movable blocking piece 10, the movable blocking piece 10 is driven to move towards the outside of the retainer body 1 due to the abutting, the first movable block 6 slides on the surface of the limiting rod 7 to extrude the reset spring 8 to be compressed and deformed, and meanwhile, the movable blocking piece 10 slides on the surface of the second movable block 9 to adapt to the transmission effect brought by the abutting force;
the purpose of cleaning dust on the surface of the rolling body is achieved by the contact of the wiping brush head 11 on the surface of the movable baffle plate 10 and the surface of the rolling body, the dust on the surface of the rolling body is reduced, heat generated by the rolling body due to moving contact friction in the motion process is reduced, and the situation that the bearing is overheated and overworked due to long-time use is avoided
Example 2
In a specific implementation layer, this embodiment especially provides a switching mechanism, as shown in fig. 2 and 3, including peripheral ring 2, peripheral ring 2 is provided to the surface of holder main part 1 from top to bottom symmetry, and the one side that peripheral ring 2 is close to each other is that annular equidistance symmetry articulates there is joggle piece 3, and the surface of peripheral ring 2 is annular equidistance through the screw and inserts and be equipped with screw rod 4, and the surface of holder main part 1 from top to bottom symmetry is annular equidistance and has seted up the slot, and the slot longitudinal section that holder main part 1 surface was seted up is isosceles trapezoid shape.
When the part of the structure is not used, the part of the structure can be detached from the surface of the retainer body 1, when the part of the structure is used, a user inserts each group of the tenon joint blocks 3 at the bottom of the retainer body 1 into the slots formed in the surface of the retainer body 1, then inserts the hexagon wrench into the openings at the top of the screw rods 4 to rotate, and the screw rods 4 extend into the slots through the action of threads, so that the tenon joint blocks 3 are abutted, and the tenon joint blocks 3 are oppositely unfolded along the rotation of the articulated shaft and attached to the inner surfaces of the slots;
the peripheral ring 2 is now fixed and the user can assemble the peripheral ring 2 as a new part for fixing the fixture, and the user now obtains a set of bearings of the same diameter but with different rolling bodies.
As shown in fig. 3, a torsion spring is sleeved on a hinge shaft of the tenon joint block 3 hinged with the peripheral ring 2, and two ends of the torsion spring are respectively connected with the peripheral ring 2 and the tenon joint block 3.
The structure ensures that the tenon joint blocks 3 keep a mutually close and clinging state under the action of the torsion spring in the process that a user fixes the peripheral ring 2 on the surface of the retainer body 1 through the tenon joint blocks 3, thereby achieving the purpose of facilitating the operation of the user.
As shown in fig. 3, the bottom end of the screw rod 4 is connected with a transmission end 5 through a bearing, and the surface of the transmission end 5 is a smooth surface.
Through the setting of this part, when screw rod 4 is rotated and is stretched into to the slot and force the tenon piece 3 opposite direction rotation to expand the in-process, through transmission end 5 as middle transmission, avoided screw rod 4 directly to cause the transmission effect to tenon piece 3, cause the production of the great friction and wear condition.
As shown in fig. 1, the surface of the movable baffle 10 is provided with through slots at equal intervals, and the through slots are all arranged between the wiping brush heads 11.
The arrangement of the partial through groove is used for heat dissipation of the bearing assembled by using the retainer body 1 in use.
As shown in fig. 6, the holder body 1 is internally provided with a circular PVC elastic air valve 12 which is symmetrically glued at equal intervals in an up-down direction, the surface of the PVC elastic air valve 12 is glued with a passive contact piece 13, the surface of the passive contact piece 13 is pressed against the surface of the movable baffle 10, and one side of the PVC elastic air valve 12 close to each other is uniformly provided with a circular hole.
When the movable blocking piece 10 moves, the side edge of the movable blocking piece 10 can abut against the passive contact piece 13 to slide on the surface of the passive contact piece 13, the passive contact piece 13 is abutted along with the continuous movement of the movable blocking piece 10, the PVC elastic air valve 12 connected with the passive contact piece 13 is extruded, and the gas in the PVC elastic air valve 12 is sprayed out from a round hole formed in the surface of the PVC elastic air valve 12, so that the dust removing effect and the air cooling effect are brought to the rolling element in the bearing assembled by the retainer body 1.
As shown in fig. 1 and 6, the circular holes formed on the surface of the PVC elastic air valve 12 are mutually inclined and intersected, and the intersection points are in the same horizontal position and are distributed annularly.
Through the arrangement, the gas sprayed out from the round holes formed in the surface of the PVC elastic gas valve 12 is organized and concentrated in direction, so that the purposes of strengthening the ash removal effect and the air cooling effect are achieved.
Example 3
The embodiment provides a method for optimizing a retainer in a robot bearing, as shown in fig. 7, comprising the following steps:
step 1: acquiring the process and performance requirement data of the bearing retainer;
step 2: selecting a casting material suitable for steel according to a process target, and carrying out a carbonitriding quenching process after heat treatment on the steel;
step 3: keeping the internal temperature of the vessel at 850 ℃ during the process, and setting the carburizing and heat preservation time to be 30 min;
step 4: sampling the bearing retainer after the process is finished;
step 5: carrying out heat and stress test and specification detection on the finished retainer product, and waiting, and carrying out quality inspection on the samples one by one;
step 6: the reference toughness and stress test result is the qualified standard of the component, and the toughness defective component does not participate in the specification detection;
step 7: and calculating the total qualification rate of the process components in the same batch according to the sampling target, and setting a echelon qualification rate processing mode feedback index.
As shown in fig. 1, a retainer quality inspection queue is set in Step5, and the queue performs sequential quality inspection according to the support time of the retainer finished product, wherein the toughness and stress test of the quality inspection item sets the priority.
Through this setting can effectual promotion to the 1 efficiency of quality control that takes a sample of holder main part, toughness and the unqualified finished product of stress participate in the specification and detect, have wasted production time.
As shown in fig. 8 and 9 and the movable blade 10, the effective hardened layer after carburizing and quenching is calculated as follows:
in the formula: HG is a specified hardness value;
d1 d2is the effective hardened layer hardness value;
H1H2is d1 d2The arithmetic mean of the hardness measurements.
In conclusion, the heat conductivity, the friction factor, the wear resistance, the impact toughness and the density and the linear expansion coefficient of the retainer in the bearing structure are improved and promoted to a certain extent, and the performance of the retainer meets the use requirement by using a heat treatment process of low-carbon steel plus carbonitriding under the condition of relatively low cost, so that the repeated positioning precision and the track positioning precision of the robot are ensured;
the special abnormal sound of the bearing of the robot joint and the reject ratio of deformation after heat treatment are reduced to a certain extent, and the energy consumption required by heat treatment processing is reduced by about one third due to the reduction of the process temperature and the carburizing and heat-preserving time, so that the problem of saving the production cost is solved;
simultaneously can reduce the overheated overstrain that is arranged in this holder because of long-time use leads to through the mode of deashing in the use, further promoted the bearing working property who carries this holder, add the structure that is equipped with a set of adaptation another group size rolling element for this holder through the mode of tenon fourth of twelve earthly branches simultaneously to can realize the installation and the use of not equidimension bearing through this holder.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. The utility model provides a retainer in robot bearing, includes retainer main part (1), its characterized in that: the surface mounting of holder main part (1) has the switching mechanism, the inside of holder main part (1) is the annular about the equidistance symmetry seted up the activity groove, the activity inslot interpolation that the inside was seted up of holder main part (1) is equipped with first movable block (6), the activity inslot interpolation that the inside was seted up of holder main part (1) has connect gag lever post (7), first movable block (6) cover is established on the surface of gag lever post (7), the surface cover of gag lever post (7) is equipped with reset spring (8), reset spring (8)'s both ends are connected with activity inslot wall and first movable block (6) respectively, the surface of first movable block (6) is connected with second movable block (9) through the bearing, the surface cover of second movable block (9) is equipped with movable separation blade (10), second movable block (9) and movable separation blade (10) sliding connection, the surfaces of the movable blocking sheets (10) are fixedly connected with wiping brush heads (11).
2. The retainer in the robot bearing according to claim 1, wherein the switching mechanism includes an external ring (2), the external ring (2) is symmetrically arranged on the surface of the retainer body (1) from top to bottom, one surface of the external ring (2) close to each other is symmetrically hinged with a tenon block (3) in an annular equidistant manner, the surface of the external ring (2) is provided with a screw (4) through a thread in an annular equidistant manner, the retainer body (1) is symmetrically provided with slots in an annular equidistant manner from top to bottom, and the longitudinal section of each slot provided on the surface of the retainer body (1) is in an isosceles trapezoid shape.
3. The robot bearing middle retainer according to claim 2, wherein a torsion spring is sleeved on a hinge shaft of the joggle block (3) hinged with the peripheral ring (2), and two ends of the torsion spring are respectively connected with the peripheral ring (2) and the joggle block (3).
4. A robot bearing cage according to claim 2, characterized in that the bottom end of the screw (4) is connected with a driving head (5) through a bearing, and the surface of the driving head (5) is smooth.
5. The robot bearing retainer according to claim 1, wherein the surface of the movable baffle (10) is provided with through slots at equal intervals, and the through slots are arranged between the wiping brush heads (11).
6. The robot bearing middle retainer according to claim 1, wherein the interior of the retainer body (1) is annular, and the PVC elastic air valves (12) are symmetrically glued at equal intervals in the vertical direction, the surface of the PVC elastic air valve (12) is glued with the passive contact piece (13), the surface of the passive contact piece (13) is abutted against the surface of the movable blocking piece (10), and one side of the PVC elastic air valves (12) close to each other is uniformly provided with round holes.
7. The robot bearing middle retainer according to claim 1, wherein the circular holes formed on the surface of the PVC elastic air valve (12) are inclined and intersected with each other, and the intersection points are in the same horizontal position and are distributed in a ring shape.
8. A method for optimizing a cage in a robot bearing, the method being performed on a cage in a robot bearing according to any one of claims 1 to 7, comprising the steps of:
step 1: acquiring the process and performance requirement data of the bearing retainer;
step 2: selecting a casting material suitable for steel according to a process target, and carrying out a carbonitriding quenching process after heat treatment on the steel;
step 3: keeping the internal temperature of the vessel at 850 ℃ during the process, and setting the carburizing and heat preservation time to be 30 min;
step 4: sampling the bearing retainer after the process is finished;
step 5: carrying out heat and stress test and specification detection on the finished retainer product, and waiting, and carrying out quality inspection on the samples one by one;
step 6: the reference toughness and stress test result is the qualified standard of the component, and the toughness defective component does not participate in the specification detection;
step 7: and calculating the total qualification rate of the process components in the same batch according to the sampling target, and setting a echelon qualification rate processing mode feedback index.
9. The method as claimed in claim 8, wherein Step5 is implemented by setting quality inspection queue of retainer, and the queue is implemented by sequential quality inspection according to the support time of the retainer product, wherein the quality inspection item is prioritized for toughness and stress test.
10. The method of claim 8, wherein the effective hardened layer after carburizing and quenching is calculated by the following formula:
in the formula: HG is a specified hardness value;
d1 d2is the effective hardened layer hardness value;
H1 H2is d1 d2The arithmetic mean of the hardness measurements.
Priority Applications (1)
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